Plumbing Under The Floor

The center of the lav s drain is located 18 approximately above the finished floor.

Plumbing under the floor.

Supply leaks under the kitchen sink or bath vanity can go unnoticed for a long time since they re usually at the back of the cabinet. How to cut a concrete floor for new plumbing. Signs of under sink plumbing trouble. From there the pipe runs under the floor and out to the city sewage system under the street.

So before you can do any real planning you have to find that line. First locate the main stack the large 3 or 4 in. The plumbing trenches are typically dug at the same time as the slab footings if any. Diameter vertical pipe that runs into the basement floor.

Take your floor plan and measuring tape and check the location of every pipe. The two major plumbing codes in the united states is the ipc international plumbing code and the upc. Here s how to connect the plumbing under your bathroom sink. Once the trenches are dug you can add the sewer pipes and stub outs pipes that sit above the slab floor that eventually connect the sink toilet bathtub or shower and any other drains to the system.

Water can run down the pipes into the floor or subfloor rotting the sink base the floor and the framing. The photo below shows a sink drain hot water line and cold water line at a stud wall on the outer edge of the floor slab. Using the dimensions on the floor plan measure from the outside of the foundation walls or slab. Also notice the drain is centered right in the middle of this 30 inch vanity.

But it may run at an angle rather than straight out to the street.